[Bugs] [Bug 1337638] Leases: Fix lease failures in certain scenarios

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1337638



--- Comment #14 from Vijay Bellur <vbellur at redhat.com> ---
COMMIT: http://review.gluster.org/14648 committed in release-3.8 by Raghavendra
G (rgowdapp at redhat.com) 
------
commit 57372682b174c1483c41e8bc2474dcfebf0b86df
Author: Poornima G <pgurusid at redhat.com>
Date:   Sun Jun 5 00:06:11 2016 -0400

    protocol: Add framework to send transaction id with recall

    Backport of: http://review.gluster.org/#/c/14647/

    Issue:
    The upcall(cache invalidation/recall) event is sent from the bricks
    to clients. In AFR/EC setup, it can so happen that all the bricks
    will send the upcall for the same event, and if AFR/EC doesn't filter
    out these duplicate notifications, the logic above cluster xlators
    can fail.

    Solution:
    Use transaction id to filter out duplicate notifications.

    This patch adds framework for duplicate notifications.
    AFR/EC can build up on this patch for deduping the notifications

    Change-Id: I66b08e63b8799bc5932f2b2545376138a5701168
    BUG: 1337638
    Signed-off-by: Poornima G <pgurusid at redhat.com>
    Reviewed-on: http://review.gluster.org/14648
    Smoke: Gluster Build System <jenkins at build.gluster.com>
    NetBSD-regression: NetBSD Build System <jenkins at build.gluster.org>
    CentOS-regression: Gluster Build System <jenkins at build.gluster.com>
    Reviewed-by: Raghavendra G <rgowdapp at redhat.com>

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